@inherits RenderViewPage
@using Umbraco.Cms.Web
@using PBDesk.com.Extension
@{ 
  var cononicalUrl= String.Empty; 
  if(Request.ServerVariables["HTTP_HOST"].ToLower().StartsWith("www"))
    { cononicalUrl = string.Concat("http://",   Request.ServerVariables["HTTP_HOST"], DynamicModel.Url); }
  else
    { cononicalUrl = string.Concat("http://www.",   Request.ServerVariables["HTTP_HOST"], DynamicModel.Url); }
} 
<title>@Umbraco.GetDictionaryItem("Site/PageTitlePrefix") @DynamicModel.PageTitle</title>
<meta name="description" content="@Umbraco.GetDictionaryItem("Site/MetaDescription") @DynamicModel.MetaDescription" />
<meta name="keywords" content="@Umbraco.GetDictionaryItem("Site/MetaKeywords"), @DynamicModel.MetaKeywords" />
<link rel="canonical" href="@cononicalUrl" />